BLACKMER IOM E Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 15 / 52

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BASE INSTALLATION AND GROUTING
NOTE: Before the baseplate is installed, it is advisable to thoroughly clean the underside to enable the grouting to adhere to it. Do
not use oil-based cleaners since grout will not bond to it.
Once the concrete pad has cured, the baseplate can be carefully lowered over the anchor bolts.
Place shims or tapered wedges under the baseplate at each of the anchor bolt positions to provide about 19 mm - 38 mm (0.75" -
1.50") clearance between the base and the foundation. Adjust shims/wedges to level the baseplate.
Since there may be some
flexibility in the baseplate, we must perform an initial alignment prior to grouting to ensure that a final alignment can be
achieved. See section covering Alignment of Pump/Driver Shafts
. Potential problems here include bowing and/or twisting of the
baseplate. If gross misalignment is observed, shims/wedges may have to be added under the mid-point of the base or the
shims/wedges at the corners may have to be adjusted to eliminate any twist. If the driver feet are bolt-bound for horizontal alignment,
it may be necessary to loosen the pump hold-down bolts and shift the pump and driver to attain horizontal alignment. When alignment
has been achieved, lightly tighten the anchor bolts. The anchor bolts should not be fully tightened until the grout has set.
Grouting furnishes support for the pump unit baseplate providing rigidity, helping to dampen any vibration and serves to distribute
the weight of the pump unit over the foundation. To be effective, grouting must completely fill all voids under the baseplate. For proper
adhesion or bonding, all areas of the baseplate that will be in contact with the grout should be thoroughly cleaned. See note above.
The grout must be non-shrinking. Follow the directions of the grout manufacturer for mixing. Proceed with grouting as follows:
NOTE: If the size of the equipment or the layout of the installation requires it, grouting can be done in two steps as long as the first
step is allowed to cure completely before the second step is applied
1. Build a sturdy form on the foundation around the baseplate to contain the grout.
2. Soak the top of the concrete foundation pad thoroughly. Remove surface water before pouring.
3. Pour the grout through the hole(s) in the top and/or through the open ends of the channel steel baseplate, eliminating air
bubbles by tapping, using a vibrator or pumping the grout into place. If necessary, drill vent holes into the top of the base
to evacuate air.
4. Allow grout to set completely, usually a minimum of 48 hours.
5. Tighten foundation anchor bolts.
6. Recheck alignment to ensure that there have been no changes.
7. After the grout has dried thoroughly, apply an oil base paint to shield the grout from air and moisture.
PIPING
Final determination of the pump site should not be made until the piping challenges of each possible location have been evaluated.
The impact of current and future installations should be considered ahead of time to make sure that inadvertent restrictions are not
created for any remaining sites.
The best choice possible will be a site involving the shortest and straightest hookup of suction and discharge piping. Unnecessary
elbows, bends and fittings should be avoided. Pipe sizes should be selected to keep friction losses within practical limits.
All piping should be supported independently of the pump. In addition, the piping should be aligned to avoid placing stress on the
pump fittings. To eliminate possible closing of the line when performing pump maintenance, a gate valve should be installed at the
suction line.
E Series gear pumps are positive displacement pumps; as such, care must be used in protecting piping and components used in
your system. Pumps equipped with an internal relief valve are designed to protect the pump only. A system relief valve should be
installed along with the pump's internal relief valve.
When placing the pump, choose a location as close to the product source as possible. Care should be taken in your supply line to
avoid cavitation due to viscosity and suction lift.
NOTE: Some liquids may become thicker with temperature changes. Please refer
to your supplier of product being pumped for information on viscosity changes due to temperature. Avoid air pockets on suction side
of pump when designing piping layout. This will also reduce the possibility of cavitation. The weight of the piping should not be
supported or absorbed by the pump. Suction and discharge piping should be supported by pipe hangers or another suitable means.
E SERIES GEAR PUMPS ARE NOT SUITED FOR PUMPING DIRTY, SOLID-LADEN LIQUIDS. A strainer should be used on the
suction side of the pump. The strainer should consist of an adequate size mesh screen as to not cause excessive friction loss. It is
suggested that a maintenance program is created to assure that the inlet strainer remains free of obstructions and blockage.